Valve.



PATENTED OGT.3,1905.

G. W. ADAMS.

VALVE.

APPLICATION FILED DEC 1, 1904.

74 jazz/72s GEORGE WALTER ADAMS, OF EAST TAWAS, MICHIGAN.

VALVE.

Specification of Letters Patent.

Patented Oct. 3, 1905 Application filed December 1, 1904. Serial No,235,111.

To all whom it may concern:

Be it known that I, GEORGE WVALTER ADAMS, a citizen of the UnitedStates, residing at East T awas, in the county of losco and State ofMichigan, have invented certain new and useful Improvements in Valves;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in valves, and more particularly toa quick opening and closing pressure-valve.

The object of my invention is to improve and simplify the constructionand operation of devices of this character, and thereby render the samemore efiicient and durable in use and less expensive to manufacture.

WVith the above and other objects in view the invention consists ofcertain novel features of construction, combination, and arrangement ofdevices hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a sectional view through avalve constructed in accordance with my invention. Fig. 2 is anelevation, partly in section, taken on the line 2 2 of Fig. 1. Fig. 3 isa top plan view.

Referring to the drawings by numeral, 1 denotes a valve-casing, whichmay be of any suitable form and construction and which is providedwithin the same with a valve-seat 2. Goacting with said valve-seat is avalve 3, which is, as shown in Fig. 1, adjustably secured upon thevalve-stem 4, which is slidably mounted in the casing 1 and projectsthrough its top or cover 5.

As clearly shown in Fig. 1 of the drawings, the adjustable connectionbetween the valve 3 and its stem 4 is formed by providing upon thelatter two screw-threaded portions 6 and 7, which are preferably ofdifierent diameters, and confining the said valve 3 between two nuts 8and 9, which are screwed upon said screw-threaded portions 6 and 7 aboveand below the said valve. By this construction it will be seen that thevalve 3 may be readily adjusted longitudinally upon the valve-stem I inorder to cause it to properly engage the valve-seat 2.

Upon the outer face of the top or cover 5 of the valve-casing is secureda guard ring or plate 16, which alines with the opening 17 in said top,through which the outer portion of the valve-stem 4: projects, and abovesaid ring or plate 16 are bolted or otherwise secured to the top 5 twoangular bracket-arms 18, which have their upper ends bent in parallelrelation and disposed in alinement with the axis of the valve-stem.Between the said ends of the bracket-arms 18 is pivoted, by a bolt 19 orthe like, a right-angularly-shaped,

operating-lever 20. The said lever is thus pivoted at its angle and hasits short arm or end 21 pivotally connected by a pair of links 22 to theupper end of the valve-stem 4c. The long end orarm 23 of saidoperating-lever is adapted to engage a stop 24: when said lever, andhence the said valve, is in its closed or locked position. The stop 52 1is in the form of an angular bracket, which is secured upon the top 5adjacent to its edge, as shown. The relative length of the valve-stem,the links 22, and the arm 21 of the lever 20 is such that when the otherend 23 of said lever is swung downwardly into engagement with thebracket 24 the small end 21 of the lever will pass beyond the center ofthe pivot 19 of said lever to cause the latter, and hence the valve, tobe locked in its closed position, as will be readily seen upon referenceto Fig. 1 of the drawings, the parts being shown in their lockedposition in dotted lines and in their open position in full lines.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what Iclaim as new, and desire tosecure byLetters Patent, is

A valve comprising a casing having a removable cap at its upper end andprovided with an interior valve-seat, a valve-stem guided and havinglongitudinal movement in the cap and extending into said casing, a valvecarried by the valve-stem adjustable thereon and coacting with thevalve-seat, bracketarms on the cap, a right-angular lever pivotedbetween said arms, a link connecting the shorter arm of said lever tothe valvestem and a stop on the cap eoaeting with the longer arm of thelever to retain the valvestem and valve in operative position, thevalve, valve-stem, step, lever and link being removable from the casingWith the can.

In testimony whereof I have hereunto set l l r l I my hand in presenceof two subscribing Witnesses.

GEORGE \VALTER ADAMS.

Witnesses:

CHAS. CURRY, T. J. "ARREN.

